https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91967
--- Comment #3 from bob wilkinson <bobw at cristie dot com> --- You are correct it is inline assembly ... 4768 #elif (!defined(__native_client__)) && \ 4769 ((defined(__clang__) || defined(__GNUC__)) && \ 4770 (defined(__x86_64__) || defined(__i386__))) 4771 // with clang/gcc we can achieve the same effect on x86 by invoking int3 4772 asm("int3"); 4773 #else from gtest_1_9_0/googletest/src/gtest.cc so I think that this is a google error, rather than gcc. Please close this bug. It is not an error in gcc.